Wolves, which are top predators, were eliminated from Yellowstone National Park in the 1930s. In 1995, wolves were reintroduced into Yellowstone. During the period in which wolves were absent from Yellowstone, which most likely occurred?
Select one:

a greater balance of predator-prey relationships

an increase in the population of tertiary consumers

an increase in competition for food resources among small prey

a greater opportunity for primary producers to flourish